Free VPN and Proxy Checker
Check any IPv4 or IPv6 address for VPN, proxy, TOR, and datacenter usage, plus full location and network data. Free, no account required.
What does this tool check?
Enter any IPv4 or IPv6 address and the tool returns a clear yes/no signal for VPN, proxy, TOR, and datacenter detection, powered by a continuously updated database.
Beyond the privacy flags, you get full location data and network info, so you can understand not just whether an IP is suspicious, but where it is and who owns the infrastructure behind it.
Privacy signals
VPN, Proxy, TOR, and Datacenter. Each flag is independent, so an IP can trigger more than one simultaneously.
Location data
Country, city, continent, timezone, latitude, and longitude. Useful for cross-referencing a user's stated location or enforcing geo-based rules.
Network info
ASN, IP range, hostname, provider, organisation, and connection type. Shows who operates the network and whether it belongs to a residential ISP or a hosting provider.
Why VPN and proxy detection matters
Most online fraud, abuse, and policy evasion involves some form of IP obfuscation. A user behind a VPN or proxy is not automatically a bad actor, but the signal changes how you interpret behaviour, score risk, and enforce rules.
Fraud prevention
VPNs and proxies are a standard tool for fraudsters bypassing geo-restrictions, abusing promotions, or conducting account takeover attempts. Flagging masked IPs during checkout or registration lets your fraud team apply additional scrutiny before damage is done.
Account security
When a login arrives from a datacenter IP or a known TOR exit node, that is a meaningful anomaly even if the credentials are correct. VPN and proxy detection gives your security logic an additional layer to catch credential stuffing and session hijacking attempts.
Compliance
Content licences, financial regulations, and regional access rules can all be circumvented with a VPN. Detecting VPN and proxy usage helps you enforce geographic restrictions with confidence and document your enforcement efforts.
Ad fraud and analytics accuracy
Datacenter IPs and proxy traffic inflate impression counts, corrupt conversion data, and drain ad spend. Filtering these signals from your analytics and targeting pipelines keeps your performance data grounded in real user activity.
VPN detection best practices
Do not block VPN users by default
VPN use is common among privacy-conscious users and remote workers. Use the signal as one input in a broader risk score rather than a standalone block rule.
Combine with behavioural context
A VPN flag paired with unusual login timing, a new device, or failed authentication attempts carries far more weight than the VPN flag alone.
Treat datacenter IPs separately
Most legitimate users do not browse from datacenter IP ranges. Traffic from cloud hosting ASNs warrants a different response than consumer VPN traffic.
Log the full network data, not just the flag
Storing ASN, provider, and connection type alongside the detection result gives your fraud team the context to investigate patterns and improve rules over time.
Frequently asked questions
Common questions about VPN and proxy detection.
A VPN (Virtual Private Network) hides your real IP address by encrypting your internet connection and routing it through a server operated by a third party. It is used legitimately for privacy and remote access, and by fraudsters to bypass geo-restrictions or fraud controls.
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